Corderius was the latinised form of the name used by Mathurin Cordier (1479 - 1574). He was born in France and trained as a priest but became a teacher of grammar. While teaching in various cities in France and Switzerland he wrote a number of books. Among his works were several for children including the Colloquia which was used throughout Europe for over 300 years, going through innumerable editions. The Colloquia contained 100 short dialogues and in 1835 the first 40 dialogues were published in Philadelphia with a parallel English translation by W Alexander. In 2016, Tym Marsh reviewed Alexander's English translation, leaving most of it but changing some words and turns of phrase which now sound particularly dated; he also added vocabulary for the benefit of beginners of Latin.